Sleeve for a barrier



FIG. 1 is a perspective view of a sleeve for a barrier showing the claimed design.

FIG. 2 is a side elevation view thereof.

FIG. 3 is a front elevation view thereof.

FIG. 4 is a rear elevation view thereof.

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Items shown in broken lines are for illustrative purposes only and form no part of the claimed invention. 

CLAIM I claim the ornamental design for sleeve for a barrier, as shown and described. 